From edb3d17ade66402b4574fd9a7ddbab450ee85a72 Mon Sep 17 00:00:00 2001
From: Janice Collins <jcollins@google.com>
Date: Tue, 7 Apr 2020 12:26:29 -0700
Subject: [PATCH] Fix accidental reentrance on TopLevelVariables in rare case

---
 lib/src/model/package_graph.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/src/model/package_graph.dart b/lib/src/model/package_graph.dart
index cc8d51db20..a4f60d2629 100644
--- a/lib/src/model/package_graph.dart
+++ b/lib/src/model/package_graph.dart
@@ -105,7 +105,7 @@ class PackageGraph {
           yield d.precacheLocalDocs();
           // TopLevelVariables get their documentation from getters and setters,
           // so should be precached if either has a template.
-          if (m is TopLevelVariable) {
+          if (m is TopLevelVariable && !precachedElements.contains(m)) {
             precachedElements.add(m);
             yield m.precacheLocalDocs();
           }